Butterfly completing at support. Long-term buy?

FX:EURCHF   Euro / Swiss Franc
Bullish butterfly is completing in an area of support (lower bound of a channel established in late 2011).
Wait for a price to test butterfly completion point.
If RSI oversold, buy looking for a restest of channel's upper bound which had been a nice bouncing area back in early 2011 as well.
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